Solve the issue of invalid signature of Outlook

Outlook signatures improve the credibility of emails by showing the recipients their communication object's name. Therefore, if the signature is invalid, it can be anxious. This article will introduce several ways to solve the problem of "Invalid Outlook signature".

If the Outlook signature is invalid, you can try the following: First, try creating the signature using Outlook web version.

Method 1: Create a signature using Outlook web version

How to create an Outlook signature from a webpage? Here are the main steps:

Step 1: Visit the Outlook login page and click "Login" to log in to your Outlook account.

Step 2: Click the gear icon in the upper right corner of the toolbar to open "Settings".

Step 3: Click "View All Outlook Settings" and go to "Mail" > "Compose and Reply".

Step 4: Click "New Signature" and fill in the signature information. Then click Save to apply the changes.

Method 2: Uninstall Microsoft Office desktop application

If you have Microsoft Office Outlook installed, pre-installed Microsoft Office desktop applications on your computer can also cause "Invalid Outlook signature" issues. Here is how to uninstall Microsoft Office desktop applications:

Step 1: Enter "Apps and Features" in the Windows search box, and then click "Apps and Features" under "Best Match".

Step 2: Select "Microsoft Office Desktop Applications" and click "Uninstall".

Step 3: Restart the computer to check if the problem is resolved.

Method 3: Fix Microsoft Office

Fixing Microsoft Office using Windows built-in repair tools is also an effective way to solve the problem of "Invalid Outlook Signature". Please do the following:

Step 1: Right-click on the "Windows Logo Key" and select "Settings".

Step 2: Go to Apps > Apps and Features. Then open "Programs and Features" on the right.

Step 3: Right-click on "Microsoft Office" and select "Change".

Step 4: Choose Quick Repair or Online Repair according to your needs. (If the network connection is normal, it is recommended to select "Online Repair".)

Step 5: Click "Repair" to start repair. Wait for the process to complete, and then check if the Outlook signature is valid.

Method 4: Delete Office registry keys (operate with caution)

If you still can't add signatures in Outlook, the last method is to delete the Office registry key. However, if the above three methods are effective, this method is not recommended. Because any wrong registry operation can have adverse effects on your computer.

It is recommended that you first back up the registry and then follow the following steps to delete the registry key:

Step 1: Press the "Windows R" key combination.

Step 2: Type "regedit" in the input box and press "Enter".

Step 3: Select Yes in the User Account Control window.

Step 4: Press "Ctrl F", type "0006F03A-0000-0000-C000-0000000000046" in the input box, and then click "Find Next".

Step 5: Right-click the key and select "Delete".

Step 6: Repeat the above steps until all registry entries are found and deleted.

Step 7: Restart the computer and confirm that the problem has been resolved.

Summarize

If you are experiencing "Invalid Outlook Signature" issue, you can try the methods listed above. Hope one of these methods can help you. If you find other solutions to this problem, please leave a message in the comment section below to help more users. For more information about Outlook bug reports, please visit the MiniTool News Center.

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